96 lines
2.6 KiB
YAML
96 lines
2.6 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/leds/register-bit-led.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Register Bit LEDs
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maintainers:
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- Linus Walleij <linus.walleij@linaro.org>
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description: |+
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Register bit leds are used with syscon multifunctional devices where single
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bits in a certain register can turn on/off a single LED. The register bit LEDs
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appear as children to the syscon device, with the proper compatible string.
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For the syscon bindings see:
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Documentation/devicetree/bindings/mfd/syscon.yaml
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allOf:
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- $ref: /schemas/leds/common.yaml#
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properties:
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$nodename:
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description:
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The unit-address is in the form of @<reg addr>,<bit offset>
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pattern: '^led@[0-9a-f]+,[0-9a-f]{1,2}$'
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compatible:
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const: register-bit-led
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reg:
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description:
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The register address and size
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maxItems: 1
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mask:
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description:
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bit mask for the bit controlling this LED in the register
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$ref: /schemas/types.yaml#/definitions/uint32
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enum:
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[ 0x1, 0x2, 0x4, 0x8, 0x10, 0x20, 0x40, 0x80, 0x100, 0x200, 0x400, 0x800,
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0x1000, 0x2000, 0x4000, 0x8000, 0x10000, 0x20000, 0x40000, 0x80000,
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0x100000, 0x200000, 0x400000, 0x800000, 0x1000000, 0x2000000, 0x4000000,
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0x8000000, 0x10000000, 0x20000000, 0x40000000, 0x80000000 ]
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offset:
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description:
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register offset to the register controlling this LED
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$ref: /schemas/types.yaml#/definitions/uint32
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deprecated: true
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required:
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- compatible
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- mask
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- reg
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unevaluatedProperties: false
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examples:
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- |
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syscon@10000000 {
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compatible = "arm,realview-pb1176-syscon", "syscon", "simple-mfd";
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reg = <0x10000000 0x1000>;
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#address-cells = <1>;
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#size-cells = <1>;
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ranges = <0x0 0x10000000 0x1000>;
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led@8,0 {
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compatible = "register-bit-led";
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reg = <0x08 0x04>;
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offset = <0x08>;
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mask = <0x01>;
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label = "versatile:0";
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linux,default-trigger = "heartbeat";
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default-state = "on";
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};
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led@8,1 {
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compatible = "register-bit-led";
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reg = <0x08 0x04>;
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offset = <0x08>;
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mask = <0x02>;
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label = "versatile:1";
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default-state = "off";
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};
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led@8,2 {
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compatible = "register-bit-led";
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reg = <0x08 0x04>;
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offset = <0x08>;
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mask = <0x04>;
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label = "versatile:2";
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default-state = "off";
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};
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};
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...
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